Glass doors that change from clear to frosted when open?

Does anyone know what kind or where to buy glass doors that change from clear to frosted and back again whenever they open or close? My boss is really interested in this concept. I saw it once on CSI they also have it for windows, like for bathrooms, I just can't find where I would buy anything like this. Thanks!Glass doors that change from clear to frosted when open?
The glass you are talking about has Liquid Crystal technology sandwiched between two panes of glass. It looks like this company specializes in ';smart glass';:


http://www.elmontglass.com/





more info:


http://www.inhabitat.com/2006/02/19/supe鈥?/a>Glass doors that change from clear to frosted when open?
http://www.spd-systems.com/SPD%20Flash%2鈥?/a>





maybe